#include <iostream>
#include <cmath>

using namespace std;

class CIRCLE {
	private:
		double x, y, r;

	public:
		void set(double, double, double);
		double area();
		double perimeter();
		void show();
};

void CIRCLE::set(double a, double b, double c) {
	x = a;
	y = b;
	r = c;
}

double CIRCLE::perimeter( ) {
	double tmp;
	tmp =  2 * 3.14 * r;
	return tmp;
}

double CIRCLE::area() {
	return 3.14 * r * r;
}


void CIRCLE::show() {
	cout << "(" << x << "," << y << "," << r << ")";
}

int main() {
	CIRCLE a;
	double x, y, r;
	cin >> x >> y >> r;
	a.set(x, y, r);
	a.show();
	cout << endl;
	cout << a.perimeter() << endl;
	cout << a.area() << endl;
	return 0;
}
